CN207229800U - For extra-supercritical unit high-temperature high pressure valve - Google Patents
For extra-supercritical unit high-temperature high pressure valve Download PDFInfo
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- CN207229800U CN207229800U CN201721192073.0U CN201721192073U CN207229800U CN 207229800 U CN207229800 U CN 207229800U CN 201721192073 U CN201721192073 U CN 201721192073U CN 207229800 U CN207229800 U CN 207229800U
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- baffle
- valve
- connection boss
- runner
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Abstract
The utility model discloses one kind to be used for extra-supercritical unit high-temperature high pressure valve, including valve body and baffle, the valve inner is equipped with runner, the valve end is provided with connection boss, fixed after two connection boss docking with fastening bolt, baffle is provided between the end face of connection boss docking, the through hole for being docked with valve flowing channel is provided with the baffle, after the connection boss docking of two valve bodies, it is fixedly connected by fastening bolt, baffle is accommodated between two connection boss, the positive stop strip being arranged on connection boss can be that baffle plays guiding role, when the through hole on baffle is corresponding with the runner of body cavity, valve is in opening, when the through hole on baffle and the runner of body cavity stagger, valve is in closure state.The utility model is simple in structure, and cost is low, is particluarly suitable for using under valve opening and the relatively low scene of closed action frequency, can farthest reduce cost and ensure the stability of valve.
Description
Technical field
A kind of valve is the utility model is related to, it is specifically a kind of to be used for extra-supercritical unit high-temperature high pressure valve.
Background technology
The critical parameters of water are：Tc=374.15 DEG C, Pc=22.129MPa., will in critical point and supercriticality
Invisible Evaporation Phenomenon, water are directly changed steam state in the case where keeping single-phase from liquid.Pressure is generally more than critical point Pc
Scope be known as supercritical region, scope of the pressure less than Pc is known as close-to-critical range.Generally when steam pressure brings up to 25MPa,
It is known as ultra supercritical.
With the rapid growth in recent year power station market, the requirement for efficiency of plant and environment protection emission is more and more tighter
Lattice, ultra supercritical have been the preferred steam inlet conditions of domestic more than 600MW steam turbines, and China has put into operation nearly hundred 600 DEG C at present
The extra-supercritical unit of grade.In order to further improve unit efficiency, a new generation that research steam parameter is up to 700 DEG C is high
Parameter extra-supercritical unit will be one of developing direction of following coal-fired power generator set.
10CrMo (W) NbN/9CrMoCoNbNB ferrite materials applied to 600 DEG C/625 DEG C temperature grades cannot at present
High stress load long-term work is carried at such high temperatures, and must use more heat safe super nickel-base alloy.It is but resistance to
The nickel-base alloy of high temperature is not only very expensive, and nickel is rare metal, therefore should be reduced as far as possible in part design expensive Ni-based
The use of material.
Utility model content
The purpose of this utility model is to provide one kind and is used for extra-supercritical unit high-temperature high pressure valve, is ensureing to meet valve
On the premise of steady operation, the usage amount of nickel-base alloy is reduced.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
One kind is used for extra-supercritical unit high-temperature high pressure valve, including valve body and baffle, the valve inner are equipped with runner,
The valve end is provided with connection boss, is fixed after two connection boss docking with fastening bolt, in connection boss docking
Baffle is provided between end face, the through hole for being docked with valve flowing channel is provided with the baffle, when through hole on baffle and valve
When runner position between body is staggered, valve is closed.
Further, the connection boss docking end face sets positive stop strip, and interior spacing and the barrier width of positive stop strip are adapted,
Positive stop strip coordinates with flapper gap, and baffle can be slided along positive stop strip guide direction, and the effect of positive stop strip is that constraint baffle is removed in figure
The free degree in other directions outside above-below direction.
In order to improve the intensity of baffle and heat resistance, the material of the baffle is high-temperature nickel-base alloy, and baffle shapes are regular,
It is easy to process, the cost of valve can be effectively reduced.In order to further reduce the usage amount of the usage amount of high-temperature nickel-base alloy,
The material of the baffle is used into chromium molybdenum steel, two holes for being used to inlay gasket and sealing ring, institute are provided with baffle
State and a circular hole be provided among sealing ring, for can valve body runner docking, gasket is solid construction, the runner with valve body
After docking, play the role of baffle seal, the gasket and sealing ring use nickel-base alloy.
The beneficial effects of the utility model are：
After the connection boss docking of two valve bodies of the utility model, it is fixedly connected by fastening bolt, baffle is accommodated
Two connection boss between, be arranged on connection boss on positive stop strip can be baffle play guiding role, when the through hole on baffle with
When the runner of body cavity is corresponding, valve is in opening, when the through hole on baffle and the runner of body cavity stagger,
Valve is in closure state.The utility model is simple in structure, and cost is low, be particluarly suitable for valve opening and closed action frequency compared with
Used under low scene, can farthest reduce cost and ensure the stability of valve.
Brief description of the drawings
The utility model is described in further detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the structure diagram of the utility model.
Fig. 2 is the sectional view along A-A of Fig. 1.
Fig. 3 is the structure diagram of the utility model valve closure state.
Fig. 4 is the B-B direction sectional view of Fig. 3.
Fig. 5 is the structure diagram of the middle baffle of the utility model.
In figure：1-valve body；11-connection boss；13-runner；2-baffle；21-through hole；22-gasket；23-close
Seal；3-fastening bolt；4-positive stop strip.
Embodiment
As illustrated in fig. 1 and 2, it is a kind of to be used for extra-supercritical unit high-temperature high pressure valve, including valve body 1 and baffle 2, the valve
Body 1 is internally provided with runner 13, and 1 end set of valve body has connection boss, solid with fastening bolt 3 after two connection boss docking
It is fixed, baffle 2 is provided between the end face of connection boss docking, is provided with the baffle 2 for being docked with 1 runner 13 of valve body
Through hole 21.
As shown in Figures 3 and 4, when 13 position of runner on baffle 2 between through hole 21 and valve body 1 is staggered, valve, which is in, closes
State.
Further, the connection boss docking end face sets positive stop strip, and interior spacing and the barrier width of positive stop strip are adapted,
Positive stop strip 4 and 2 clearance fit of baffle, baffle 2 can be slided along 4 guide direction of positive stop strip, and the effect of positive stop strip is that constraint baffle 2 removes
In figure outside above-below direction other directions the free degree.
In order to improve the intensity of baffle and heat resistance, the material of the baffle 2 is high-temperature nickel-base alloy, and 2 shape of baffle is advised
Then, it is easy to process, the cost of valve can be effectively reduced.
As shown in figure 5, in order to further reduce the usage amount of the usage amount of high-temperature nickel-base alloy, by the material of the baffle 2
Matter uses chromium molybdenum steel, and two holes for being used to inlay gasket 22 and sealing ring 23, the sealing ring 23 are provided with baffle 2
Centre is provided with a circular hole, for can valve body 1 runner docking, gasket 22 is solid construction, is docked with the runner of valve body 1
Afterwards, baffle seal is played the role of, the gasket 22 and sealing ring 23 use nickel-base alloy.
The operation principle of the utility model is as follows：After the connection boss 11 of two valve bodies 1 docks, fixed by fastening bolt
Connection, baffle 2 are accommodated between two connection boss 11, and the positive stop strip 4 being arranged on connection boss can be that baffle 2 plays guiding
Effect, when the through hole 21 on baffle 2 is corresponding with the runner 13 of body cavity, valve is in opening, when on baffle 2
When through hole 21 and the runner 13 of body cavity stagger, valve is in closure state.The utility model is simple in structure, and cost is low, especially
It is adapted to use under the relatively low scene of valve opening and closed action frequency, can farthest reduce cost and ensure valve
The stability of door.
Disclosed above is only specific implementation of the patent example, but this patent is not limited to this, for the general of this area
For logical technical staff, on the premise of the utility model principle is not departed from, the deformation made should be regarded as belonging to the utility model
Protection domain.
Claims (4)
1. it is used for extra-supercritical unit high-temperature high pressure valve, including valve body (1) and baffle (2), it is characterised in that：The valve body
(1) runner (13) is internally provided with, valve body (1) end set has connection boss, with fastening spiral shell after two connection boss docking
Bolt (3) is fixed, and baffle (2) is provided between the end face of connection boss docking, is provided with and is used for and valve body on the baffle (2)
(1) through hole (21) of runner (13) docking.
2. according to claim 1 be used for extra-supercritical unit high-temperature high pressure valve, it is characterised in that：The connection boss
Dock end face and positive stop strip is set, interior spacing and the barrier width of positive stop strip are adapted, positive stop strip (4) and baffle (2) clearance fit.
3. according to claim 1 be used for extra-supercritical unit high-temperature high pressure valve, it is characterised in that：The baffle (2)
Material be high-temperature nickel-base alloy.
4. according to claim 1 be used for extra-supercritical unit high-temperature high pressure valve, it is characterised in that：By the baffle
(2) material uses chromium molybdenum steel, and two are provided with the baffle (2) and is used to inlaying gasket (22) and sealing ring (23)
Hole, is provided with a circular hole among the sealing ring (23), for can valve body (1) runner docking, gasket (22) is solid
Structure, the gasket (22) and sealing ring (23) use nickel-base alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721192073.0U CN207229800U (en) | 2017-09-18 | 2017-09-18 | For extra-supercritical unit high-temperature high pressure valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721192073.0U CN207229800U (en) | 2017-09-18 | 2017-09-18 | For extra-supercritical unit high-temperature high pressure valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207229800U true CN207229800U (en) | 2018-04-13 |
Family
ID=61862469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721192073.0U Active CN207229800U (en) | 2017-09-18 | 2017-09-18 | For extra-supercritical unit high-temperature high pressure valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207229800U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898748A (en) * | 2021-08-24 | 2022-01-07 | 江苏圣业阀门有限公司 | High-temperature and high-pressure valve for ultra-supercritical unit |
-
2017
- 2017-09-18 CN CN201721192073.0U patent/CN207229800U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113898748A (en) * | 2021-08-24 | 2022-01-07 | 江苏圣业阀门有限公司 | High-temperature and high-pressure valve for ultra-supercritical unit |
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